Combination lock



Oct. 19,1943. 0. LALONDE 2,332,239

' COMBINATION LOCK Filed March 11, 1941 2 Sheets-Sheet 1 33 79 a4 LOCKED UNLOCKED B; Kg 93 88 709 m wi'kn UNLOCKE6D BEQCggBINATIDN K 7K? 13414 6 88 INVENTOR Use/v? LAL o/vus ATTORNEYS o. LALONDE 2,332,239

COMBINATION LOCK Filed March 11, 1941 2 Sheets-Sheet 2 INVENTOR I OSCAR LALO JE M? Mr,

ATTORNEYS Patented Oct. 19, 1943 2,332,239 COMBINATION LDCK J Oscar Lalonde, Bronx, ApplieationMareh 11, 1941, sennNo. 382,704 g 9 Claims. (01. 7044) I This invention relates to looks that may be opened either by a keyorpermutation mechanism, and while theinven'tionis capable of genin looks for service kits, brief cases, lockboxes onthe like.

The principal object of ihe in ent on is to provide a .lock that maybenopened either by a key or by permutation -mechanism .and which is extremely compact; inexpensive to manufacture and .has an improved construction, arrangement and cooperation of parts such as to enable certain .oLthe same to be employedin both the key and. permutation lock-.opening operations.

' ..Anotherobject of the=inyention is toprovide a lock that may be opened either-by a key'or by permutationmechan'ism and which, through unsetting of the permutation-mechanism and provision .of .a device ion-unsetting key ieontrolled tumblerq plates,prevents opening of the lock exoeptfby onehaving-a proper key and knowledge of the proper combination of numbers for setting said permutation mechanism.

Another object of the invention is to -provide a lock that may be,, open ed either'by a key or by permutation meohanism,;and which, through the provision .of keycontrolled tumbler plate ;-un

setting .-means,.does nothave to be locked by the key after employment thereof to open said look,

ennother obj ect of-;the-.inventio nvisto provide a look that maybe opened-eitherby; a'key'or'by permutation nechanism,and which has. a general 1y improved and efficient :eonstruction .of parts and a compact and fool-proof arrangement thereof such as to rendenthe .lo'ck particularly useful upon service "kits, brief ;cases,;-l ook boxes; or the like; 7 nother object of the invention isto provide an ;improved;;;permutation or combination lock which, by reason of several different dial setting eral use, it is particularly adaptedfor embodiment marks thereon, renders :itimpossibleioran unauthorized, person :tojleaJrnby observation-which mark and rpa-rticular combination of dial members are employed-,to openthe lock.

Anotherfobject of ithe'invention is to provide an improvedpermutation'oncoinbinationiock which, throughseveral different dial 1 setting marks thereon, enablesa considerably increased numher of; .loek: opening number combinations to be employed;

;'I-he invention consists. of the Construction,

illustrated,described-:and,;claimed.-, i in the accompanying:dmwings,formingpart hereof, is illustrated one form of embodiment of combination :and arrangement of partsasherein the invention, in which jdrawings similar reference character's designate fc'or'resp'ondi'ng parts,

and in which: ,V I1 e k i Figure 1 is aperspective view 'ing] the invention and shown installed upon a service kit; i A

Figure 2 15am lock with acover plate and associated parts removed and a bolt shown locked'by key controlled tumbler plates;

' Figure 3 is a viewisimilar to Figure 2,'but showing the, bolt unl'ooked, through setting of the tumbler plates by a key; i r

Figure 4 is a view similar .toiFigure 3 but shoyving the tumbler plates'uns'et and -the bolt unlocked bypermutation mechanism;

Figure .5 is alongitudinal sectionaljview on the line .5-5 of Figure2, looking in the direction indicated by the arrows and showing the. Cover plate andassociated parts omitted in Figures '2, 3and4;. V 7 Figures 6 and? are transverse, sectional views on the lines 6-15 and 1"|, respective1y,-' of .Figures2 and 3, looking in the directions indicated by thearrows andshowing the' cover plate;

' I'Fig'ure "8 isa detailed exploded perspective view of ana'ssembly of parts including allock oasing,ia

belt, a spring, a bolt operating d'evice, andpe'rmutation mechanism .aiYd, V i

Figure 9 is etailed exploded perspective view of anassembly of parts including tumblerv plates,

a retaining spring therefor, andtumblerfpla'teun setting means Referring to thedravvingsiand more particm larly to Figure} thereof, l 0 indicates airont,"p ortion of a" s ervioeakit and: H indicates a si-milar' portionofa-hinged oover forsai d kit. "The cover .I has securedthereto, as by rivet s ,l-2, a hasp plate 3 on which is hinged asat .M, a hasp l5i I he hasp I5 is provided with a keeper 1 6 (Figure 5) which, when the cover-l I isolosed and thehasp l5 is:swung -torwa1-'d and awayirom the front of the servicel kit I ll, passes into and out of a keeper opening l! in a cover plate 8 for a-lock casing 3 I9 ,The .lock casing 1.9 .i'siprovidedwith lugs 26 that are press fitted insuitable openings-formed in the boiler -p late- I 8 and one ofywhioh: catedtatll in Eigure f]. of thedrawings manner, the lock casing IQ iSattaehed to the cover, plate -.I-8 interiorly thereof and-after the,

various parts. of lock mechanism, hereinafter described, have ,been assembled -in said lock casing. Thereupon, {the cover -plate 13- is secured-, as byI?iYetS .=22 to the .trontportiori of the service kit III in position such that when the hasp I5 is of a lockenibodyenlarged norm elevation of the swung into and out of engagement with the cover plate it? the keeper I6 will pass into and out of said plate through the keeper opening I? therein.

Slidably arranged in the casing I9 is a bolt operating device 23 having a bolt engaging lug 24 at one end, and spaced lugs 25 at the opposite end for a purpose hereinafter set forth. The bolt operating device 23 is provided at opposite sides thereof with extensions 26 and 2'! that engage opposite sides of the casing I9 to guide said device therein. The bolt operating device 23 also serves as a carrier for permutation mechanism hereinafter described, and for this purpose said device has fixed on it a post 28. The casing disk 54 is provided at a predetermined point in its periphery with a notch 58 forming a shoulder 59 for engagement by the bolt detent 34 and a cam 66 for engagement by the rounded end 50 of said detent.

A washer 6|, having a central opening 62 to receive the post 28, is fitted thereon against the tumbler disk 54 and keyed to said post by the fiat portion 42 thereof which engages a similar portion 63 formed in the washer at the central opening 62 thereof. A tumbler disk 64 is provided with a central opening 65 to receive the hub 66 of a dial 61 disposed exteriorly of the cover plate I8 for rotary and sliding movement I9 is provided in one end thereof with a bolt opening 29, and slidably mounted in said opening is a bolt'36 which extends in said casing over the bolt operating device 23 and is movable with and relative thereto.

The bolt 30 has a beveled end 3I normally. projecting outwardly through the opening 29 and faced toward the keeper opening I'I so as to be engaged with the keeper I6 to close the lock and disengaged from said keeper to open the lock. The bolt 36 has'an arm 32, and the bolt engaging lug 24 of the boltoperating device 23 extends between the lock casing I9 andthe arm 32 to engage said arm. The arm 32' has an upwardly and inwardly curved arm 33, the free end of which is provided with a detent 34. A spring 35 is mounted, as by a coil 36 thereof, on a lug 31 on the lock casing I9 and projecting within the same. A bent end 38 of the spring 35 bears against the bolt 26 and the opposite end 39 of said spring bears against one side of the lock casing I9. The spring'35 thus serves to normally maintain the bolt operating device 23 and the bolt 36 at the left hand end of the casing I9 (Figure 2) and to normally project the beveled end 3| of the bolt 36' outwardly through the bolt opening 29 for snap action engagement of said beveled end with the keeper I6 of the hasp' l5. u

The bolt operating device 23, as stated above, serves as a carrier, for permutation mechanism, that comprises parts which are preferably ar ranged and constructed as follows: A washer 40. having a central opening "4 I' toreceiverthe post 28 is fitted thereon against the device 23"and keyed to said post by a flat portion 42 thereof which engages: a similar portion '43 of the washer opening 4I'. A tumbler disk 44 having a central opening 45 to receive the post 28 is rotatably mounted thereon against the washer 42- This tumbler disk 44 has a lug 46 which projects from the side of the disk opposite that bearing againstv the washer 49. 'The tumbler disk 44 is provided at a predetermined point in its periphery, with a notch 41 forming a shoulder 48 for engage ment by the bolt detent 34 and a cam 49 for engagement by a rounded end'56 of said detent.

A washer 5I, having a central opening52 to receive the post 28, is fitted thereon against the tumbler disk 44 and keyed to said post by its flat portion 42 and engagement therewith of a similar portion 53 formed in the washer opening 52. A tumbler disk 54, having a central opening 55 to receive the post 28, is rotatably mounted thereon against the washer 5I.' This tumbler disk 54 is provided with diametrically opposed arcuate shaped slots 56 and 51, the tumbler disks 44 and 54 being interengaged through the me-- dium of the lug 46 which extends from the disk 44 into the slot 56 of the disk 54; The tumbler relative thereto. The dial 61 and its hub 66 are provided centrally thereof with an opening 68 to receive the post 28 upon which said dial is rotatably mounted. The hub 66 of the dial 61 proiects into the casing I9 through a slot 69 in the cover plate I8 that extends longitudinally thereof and enables said dial, under certain conditions, to be rotated to set or unset the permutation mechanism, and under other conditions, enables the dial to be reciprocated on the cover plate I8 to impart like movement to the bolt operating device 23. I

The tumbler disk 64 is fixed on the dial hub 66 within the casing I9 and thus is rotatable by the dial 6'! and serves to maintain it in position on the cover plate I8. The dial hub 66 and the tumbler disk 64 bear against the washer BI, and said disk and the tumbler disk 54 are inter-engaged, as by a lug I0 on the tumbler disk 64 and extending in the arcuate slot 51 of the'tumbler disk 54. The tumbler disk 64 is provided at a predetermined point in its periphery with a notch II forming a shoulder I2 for engagement by the detent 34 and a cam I3 for engagement by the rounded end 56 of said detent.

The dial 6'! is provided with an annular knurled knob 14 formanipulating it and said dial is also provided with an annular beveled portion 15 having a graduated scale and numbers herein disclosed as including the series 0 to 9. In accordance with the invention, a plurality of spaced dial setting marks, hereinshown as three, are provided'to prevent unauthorized visual observation-of the'proper combination of said numbers indicated at I6, 11 and -18, and they are applied on the cover plate -I' 8 opposite the annular beveled portion I5 of the dial 61. Inthe particular lock herein disclosed, the mark employed is the lefthand one indicated at '16, and in opening the lock by the permutation mechanism, the dial is turned clockwise (Figure 1) to bring the number 2 opposite the mark 16, then counterclockwise to bring the number 6 opposite said mark, whereupon said dial is turned clockwise to open the lock, all as hereinafter described. The three marks 16, I1, 18, not only prevent unauthorized visual observation of the lock opening combination of numbers, but 'also provide for three times as many different lock opening combinations of numbers employablei'n conjunction with the three marks", 11 and'l8, selectively.

A lock embodying the invention is controlled for purposes of opening it by permutation mechanism constructed and arranged as described, or by key controlled tumbler plate mechanism comprised by parts preferably arranged and constructed as follows. H The key controlled tumbler plate mechanism is arranged in the lock casing 19 between the bolt operating device 23 and the end of said casing opposite that inwhich the ating-device 23, andth ingc84 into openingscQizSi, and '19, and turned bolt 90 is mounted, For this purposegsaidzoppo site end of thecasin'g 'I;9, i"s providedrin the 300ttom wall thereof "withxan opening ":19 for reception of the shouldered ,end- =-of a key 80. "The key 80 is provided'at a predetermined point onone side thereof witha tumbler plate actuating lug inrthe proper rlirectiommhe key mg 2-8 I 'will shift thetumbler plate9.lt'downwardlyxand the key lugs BI, and on the opposite side at predetermined points with spaced "tumbler ,plate actuating lugs 82 and "83. The cover plate I8.-is provided with a key opening 84 aligned .withthe opening 19,

82 .and 83willtshiftthe tumbler plates .90 and L92 upwardly, Easwiewed in Figures 3 and '7 of the drawings; :Thertumbler iplates "'90, "9|, 92 will thus'ibe'i's'etiwithitheir :pairs of recesses '91, 98; 99

. in alignment withiieach oth'er and with the lugs and the 'side'walls-of the casing I.9 adjacent ;the

- afiord clearance for the key-89, -and outwardly bent end portions :88 terminating in lugs 89disposed in the openings 85 and whereby saidspring is retainedin proper :position' in the casing- 4.9.

Aseries of tumbler plates 99, 9!, 92 are slidably arranged one againstanotheriin the casing l9 between the boltloperating :device 23 and the end of the casing I9 opposite that in which the bolt 39 is mounted. These tumbler plates :are

relatively shiftable transverselyof .the bolt operating device 23 to set or unset them, and said plates have lugs 93 extending in the tumbler plate receiving and guiding openings- 85. The tumbler plates 99, 9|, 92 are disposed between the cover plate I8 and the spring .86 and said spring prevents accidental relative displacement of-said plates. i The tumbler plates 99,9I, 92 are aligned with the key openings I9 and '84 and are provided opposite thereto with openings 94, 95,96 -'for re-, ception of the keyfl80. In their corresponding inner edges, ,and at different predetermined points therealong, the tumbler plates .90, 9| 92 are provided with pairs of lug receiving slots 91, 98, 99 aligned with each other and with the lugs of the bolt operating device if? when the tumbler plates are .set, anddisaligned relative to each other and to said lugs 25 when .said plates are unset. The turnblerfplates .90, 9I,'.9 2 1nay be-set by-the key 89 ashereinafterdescribed and, in accordance withthe invention, said platesmay. he unset bymeansassociated therewith. g Accordingly, the tumbler plates 90, 9I,,--92..are provided in theircorresponding outer edges with recesses 1'09, NH, 192, and extending --outwardly from said platesat opposite ends ofsaidlrecesses, arepairs of lugs l03:an d I94, .I95 an'd I96, and lilland "I08. ISlidably arranged in the casing 11.9 between the tumbler-plates 99, 9I,, 92 1and the adjacent end wall of .said casin is a; tumbler plate .unsetting device I99 having an operating lug H9 disposed in the recesses 1'90, :fIllIjlM between the pairs of lugs 'lill3and I04','I05.and I96, and Ill'lland I98 and extendingoutwardly-of the cover plate l"8throug'h the adjacent opening T 21 (Figure l) therein.

In the-operation of the lock-it willfirst be .-as-

sumed that thetumbler plates 99, 9 I, 92.are upset and that it is desired to set them with the key 80 in order to open the lock. When thetumbler plates are unset, as presently described, their pairs of recesses 91, 98,99 are disaligned relative to'eachotherand to the lugs "25 of the-boltoperelockparts are locked and positioned as shown :in FiguresZ, .5 and 6 of the drawings. The tumbler plates ,.99, 9I .92 .thus prevent actuation of the bolt operating .device 23 and operation of the1bolt 3'fl thereby to open the lock. Whenthekey- 90 is inserted throughiopen- 25 rof athe .bolt toperating device .23. Thereupon, byimovin'g the Adi-3,1 .611 :to "the right longitudinally of ;th :recess 69in the cover-plate I8, corresponding..=movement will "befimparted to the'permutation mechanism, :the' ibolt Io'pera'ting device 23 and the bolt 30. the ib'Olt operating device' 23 isz moved to theright, its lugs 25-enter the aligned pairs 1 of: .tumb'ler :plate recesses 91, 98, 99, the

' spring 3531s compressed, and 'the'beveled end 3| ofj'the :bolt 80 :disengaged from the keeper I6 of :the'hasp :I5; "Theirpart's are thus positioned as .shown' in i-Figures l3 and '7 :of the drawings, and the Iockisunlocked. Thereupon'thehasp I5 may berjmanually :or. spring actuated outwardly, and theficovertlfl aopened to 'open'the service kit I0.

7 :After the lock and the service kit have been unlocked #and opened, respectively, as. above de scribed,v=the i:dia1 61 is released and the spring 95;:returns the bdltoperating .device 23 and the bolt ;30:to the lef1t,;as}viewed in Figures 2 and 5 of "thedrawings, lsothatt'he beveled end 31 of said .boltis projected-through the opening 29. Thereup'on the cover Iii of the service kit Ill-may be .closed and theihasp- I 5 swung inwardly so that the keeper I6 is engaged withthe beveled end 31 ofathe' bolt :39 through a snap action thereof affordedlby the spring 35. The lock is then locked by the tumbler plate unsetting means I-99nthrough actuation of the same downwardly This unsets the tumbler plates 90, 9|, 92 so that their pa'irsof recesses 91, 98, 99 are .disaligned with respect to each other and to the lugs-'25 andlock opening movement of the bolt operating 'device 23 and the bolt 39 is prevented. l a

Assuming'howthat with the'mec'hanism locked by the tumb1er=plates=99, M, 92, the owner desires to unlock said mechanism but has forgotten or misplaced his key. Under these conditions the lock may be opened by the permutation mechanism in the following manner.

The dial 6! is turned-clockwise (Figure -1-') to bring the numeral-.2 thereof ppp'oSitethe mark 16, whereuponthe dialisturnedcounter-clockwise to bring the numeral6 -thereon"opposite said'mark. 'This, through interengagement of the tumbler disks 44, 54,-64 by 'thejlugs' 46 and 19 in the slots 56 and 51, rotates said disk relatively so that the notches 4-7 and 58 of "the disks '44 and 54 are brought into alignment-ppposite the detent 34 on thebolti-IO. Thereuponthedialfi'l isja'gain' turned "clockwise tojlike'wise turn the tumbler disk 64 andibring its notch TI into. alignment .with'the notches 41 and 58 at'which time/the spring '35 swing's'th'e bolt30' clockwise about the bottom of open'ingf29 as a'fulcrum,,asindicated in dotted lines in'FigureTl of'the'drawings, and the detent "34 enters "the aligned tumbler disk notches" 4l,'58,"ll. v

The dial 61 is thenlifurther turned clockwise to further rotatethetumblerdisks 44, .54," 64 in the same manner, andsaiddisks, through such ro'tation thereoiand engagement of theirshoulders 48,59, T2 withthe detent 34, ,move the bolt 30 inwardly andirelative to the then locked bolt Operating device :3.- Ei u e I QLQI 'S shows in full lines the position of the bolt 30 and the permutation mechanism when the former has been moved into the lock casing l9 by said mechanism. Underithese conditions, the beveled end 3! of the bolt. 30 is disengaged from the keeper l6 of the hasp l5, therebyopening the, lock so that the hasp may be swung outwardly and the cover I I raised to open the service kit Ill.

When the lock is opened and the bolt moved inwardly by the permutation 'mechanism', the spring is compressed. After opening the service kit 10 by the permutation mechanism, as described; the dial 6! is released, whereupon the spring 35 projects the bolt 30outwardly through opening 29 for snap action engagement with the keeper l6 when the cover H and the hasp l5'are closed, as previously described. Thereupon the dial 6'! is turned to rotateand unset the tumbler disks 44-, 56, 64, and as a result of such rotation of the disks their cams 49, and 13 disengage the detent 34 from the disks, the notches 4T, 58, H are moved out of alignment, and the mechanism is locked against opening operation. The lock may then again be opened by the permutation mechanism or by the key 80, as previously described, and in the latter case shifting of the tumbler plates 93], 9|, 92 by the key 86 causes said plates to shift the tumbler plate unsetting means i1 9 upwardly, into position for again unsetting the plates. through downward movement of said device imparted thereto after the lock has been opened with the aid of the key 88, as described. 1

It will thus appear that the invention embodies a lock having a novel construction, arrangement and operation of parts, which lock may be opened either by: a combination or a key and is particularly useful on service'kits, brief cases, lock boxes, or the like. The lock herein disclosed has been illustrated and described with more or less particularity but it is to be expressly understood that said lock constitutes one form of embodiment of the invention only and that said invention is not limited to said form of embodiment or otherwise than by the terms of the appended claims.

Having thus fully described the invention, what is claimed as new and desired to be secured by Letters Patent or" the United States is:

1. In a lock of the type having a casing provided in one end thereof with a bolt opening, a cover plate for the casing provided with a keeper opening, a bolt in the casing slidably mounted in said bolt opening and normally projecting out,- wardly therethrough back or the cover plate and opposite its keeper opening, and a hinged keeper arranged to swing in and outof the cover plate through said keeper opening for engagement oi the bolt with and disengagement of the same from said keeper, 'thecombination of a buit'opcrating device engageable with the bolt and arranged for slidable'act'uation in the casing to shift the bolt and disengage it from the keeper, a plurality of tumbler plates slidably arranged one against another in the casing between said opposite end thereof and the bolt operating device, the tumbler plates being relatively shiftabie transversely of the bolt operating device to set i or unset them and the plates when set permitting actuation of the bolt operating device, when unset preventing actuation thereof, and permutation mechanism on the bolt operating device adapted for connection with the bolt to operate it wnenthe tumbler plates are unset and actuation of said device is prevented, the permutation mechanism having an operating dial therefor connected therewith through a slot in the cover plate and disposed exteriorly thereof, and said dial being manually operable to actuate said bolt operating device when said tumbler plates are set.

-2.' In a'lock of the type having a casing provided'in'one end thereof with a bolt opening, a cover late for the'casing provided with a keeper opening and a keyopening spaced therefrom, a bolt" in the casing slidably mounted in said bolt opening and normally projecting outwardly therethrough back ofthe cover plate and opposite its keeper opening, and a hinged'keeper arrangedto swing in and out of the cover plate through said keeper opening for engagement of the bolt withand disengagement of the same from said keeper, the combination of a bolt operating device engageable with the bolt and arranged fo'r slidable actuation in the casing to shift the bolt and disengage it from the keeper, and a plurality of tumbler plates slidably arranged one against another in the casing between said opposite end thereof and the bolt operating device, the tumbler plates being disposed opposite said key opening and adapted to be set by a key inserted therethrough, said tumbler plates being relatively shiftable transversely of the bolt operating'device to set or unset them, the pla es when setpermitting actuation of the bolt operating device and when unset preventing actuation thereof, and means in the casing associated with the tumbler plates for uns'etting the same, said tumbler plate unsetting means 8X- tending outwardly of the cover plate through an opening therein. 1

3. Ina lock of the type having a casing provided in one end thereof with a bolt opening, a cover plate for the casing provided with a keeper opening and a key opening spaced therefrom, a bolt in the casing slidably mounted in said bolt opening and normally projecting outwardly therethrough back of the cover plate and opposite its keeper opening, and a hinged keeper arranged to swing in and out of the cover plate through said keeper opening for engagement of the bolt with and disengagement of the same from said keeper,

the combination of a bolt operating device engageable with the bolt and arranged for slidab-le actuation in the casing to shift tlie'bolt and disengage it from the keeper, a plurality of tumbler plates slidably arranged one against another in the casing between rear end thereof and the bolt operating device, the tumbler plates being disposed'oppcsite said keyopening and adapted to be set by a key inserted therethrough, said tumbler plates beingrelatively shiftable transversely of the bolt operating "device to set or unset them and the plates when set permitting actuation of the bolt operating device and when unset preventing actuation thereof, permutation mechanism on the bolt operating device adapted for connection with the bolt to operate it when the tumbler plates are, unset and actuation 01 said F device is prevented, the permutation mechanism having an operating dial therefor connected therewith through a slot in the cover plate and disposed exteriorly thereof, said dial being manually operabletoactuate said bolt operating de-. vice when said tumbler plates are set, and means in the casing associated Withthe tumbler plates for unsettins the same, said tumbler plate unsetting means extending outwardly of the cover plate through an opening therein and the tumbler plate unsetting means being manually movable in one direction to unset the plates and movable in the opposite direction by said plates when they are set by said key.

4. In a lock having a casing provided in one end thereof with a bolt opening and a bolt slidably mounted in said opening and extending in the casing, the combination of a bolt operating device engaging the bolt and arranged for slidable actuation in the casing toward the opposite end thereof to operate said bolt, a pluralityof tumbler plates slidably arranged one against another in the casing between said opposite end thereof and the bolt operating device, the tumbler plates being provided in different longitudinal portions along corresponding edges with slots and lugs at the opposite ends thereof, said tumbler plates being relatively shiftable transversely of the bolt operating device to set or unset them and the plates when set by a key permitting actuation of the bolt operating device and when unset preventing actuation of said bolt operating device, and means in the casing associated with the tumbler plates for unsetting them, said tumbler plate unsetting means having an operating device therefor extending in said slots and between said lugs.

5. In a lock, the combination with a casing having a bolt opening, of a bolt extending through the bolt opening into the casing and provided therein with a detent, interengageable rotatably mounted tumbler disks disposed in the casing opposite the detent and provided at difierent points in their peripheries with notches aligned with each other and the detent when the tumbler disks are set and disaligned when said disks are unset,

means for engaging the detent in the tumblerdisk notches when the tumbler disks are set, and a dial for setting and unsettingthe tumbler disks and for actuating them to operate the bolt thereby relative to the bolt operating device when the detent is engaged in the tumbler disk notches by said means and operation of said bolt operatspring means in the casing for swinging the bolt in said bolt opening and engaging the detent in the tumbler disk notches when the tumbler disks are set, and a dial for setting and unsetting the tumbler disks and for actuating them to operate ing device is prevented by said tumbler plates.

8. In a lock, the combination of a bolt operating device having a bolt engaging lug, a bolt hav-' ingan arm engageable by said lug and a curved arm extending from said first named arm, said bolt being operable by or relative to the bolt operating device and said curved arm being provided with a detent, tumbler plates adapted when set by a key to permit operation of the bolt operating device and the bolt thereby and adapted when unset to prevent operation of said bolt operating device and the bolt thereby, a device associated with the tumbler disks for unset-.

ting them, permutation mechanism carried by the bolt operating device and positioned thereon opposite the curved arm of the bolt, said permutation mechanism including interengageable rotatably mounted tumbler disks provided at different points in their peripheries with notches alignedwith each other and the detent when the tumbler disks'are set anddisaligned when said disks are unset, means for slightly swinging the the bolt thereby when the detent is engaged in the tumbler disk notches by said means.

6. In a lock, the combination of a bolt operating device having a bolt engaging lug, a bolt having an arm engageable by said lug and a curved arm extending from said first named arm, said bolt being operable by or relative to the'bolt operating device and said curved arm being provided with a detent, tumbler plates adapted when set to,

permit operation of the bolt operating device and bolt and engaging the detent in the tumbler disk notches when the tumbler disks are set, and a dial for setting and unsetting the tumbler disks and for actuating them to operatethe bolt therethe bolt thereby and adapted when unset toprevent operation of said bolt operating'devic and the bolt thereby, permutation mechanism carried by the bolt operating device and positioned thereon opposite the curved arm of the bolt, said permutation mechanism including interengageable rotatably mounted tumbler disks provided at different points in their peripheries with notches aligned with each other and the detent when the tumbler disks are set and disaligned when said disks are unset, means for slightly swinging the bolt and engaging the detent in the tumbler disk notches when the tumbler disks are set, and a dial for setting and unsetting the tumbler disks and for actuating them to operate the bolt thereby relative to the bolt operating device whenthe detent is engaged in the tumbler disk notches by v said means and operation of said bolt operating device is prevented by said tumbler plates. 7. In a lock, the combination of a bolt operating device, a bolt operable by or relative to the bolt operating device and provided with a detent,

spring stressed tumbler plates adapted when set by a key to permit operation of the bolt operating device and the bolt thereby and adapted by relative to the bolt operating device when .the detent is engaged in the tumbler disk notches by said means and operation of saidIbolt operating device is prevented by said tumbler plates, said dial being operable to move the permutation mechanism and" the bolt operating device and operate the bolt thereby when said tumbler plates are set by said key.

9. In a lock, the combination of a bolt operating device, a bolt operable by said device, a curved stem on said bolt provided with a detent, a plurality of transverse tumbler plates adapted when set to permit operation of said device and when unset toprevent operation of the device and the bolt, permutation mechanism carried by the bolt operating device, said mechanism ineluding interengageable substantially circular tumbler disks provided at difierent points in their peripheries with notches alined with said detent when the-disks are set and disalined when the disks are unset, washers fixed intermediate said disks whereby they are'prevented from frictional contact one with another, means for engaging said detent in the notches of said disks when the disks are set, and a dial for setting and unsetting the disks and for actuating them to operate said bolt thereby relative to the bolt operating device when the detent is engaged in the disk notches by said means and operation of said device is prevented by said tumbler plates.

OSCAR LALONDE. 

